Helmet
US10492557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/064
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A helmet with two layers configured to slide with respect to each other is provided. The surface of one or both layers contains a sliding facilitator to improve slidability between the two layers. The sliding facilitator may be any one or a combination of (i) an organic polymer, a polysiloxane and a surfactant; (ii) an organic polymer and a copolymer based on a polysiloxane and an organic polymer; or (iii) a non-elastomeric cross-linked polymer obtained or obtainable by subjecting a polysiloxane and an organic polymer to a cross-linking reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.